Administrators at your school want to estimate how much time students spend on homework, on average, during a typical week. They want to estimate μ at the 90% confidence level with a margin of error of at most 30 minutes. A pilot student indicated that the standard deviation of the time spent on homework per week is about 154 minutes. How many students need to be surveyed to meet the administrator's goal? a.73 b.72 c.70 d.71
Administrators at your school want to estimate how much time students spend on homework, on average, during a typical week. They want to estimate μ at the 90% confidence level with a margin of error of at most 30 minutes. A pilot student indicated that the standard deviation of the time spent on homework per week is about 154 minutes. How many students need to be surveyed to meet the administrator's goal? a.73 b.72 c.70 d.71
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 14PPS
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Administrators at your school want to estimate how much time students spend on homework, on average, during a typical week. They want to estimate μ at the 90% confidence level with a margin of error of at most 30 minutes. A pilot student indicated that the standard deviation of the time spent on homework per week is about 154 minutes. How many students need to be surveyed to meet the administrator's goal?
a.73
b.72
c.70
d.71
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